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Samsung Electronics 840 EVO-Series 2.5-Inch SATA III Single Unit Version Internal Solid State Drive...
More product info
From Samsung
This report was last updated 5/3/2019.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 1,645 Ratings, we counted 1,668 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Internal Solid State Drives with authentic reviews:
Report Card
Pass Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersWARN Deleted Reviews
Deleted ReviewsWARN Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Participation
Reviewer ParticipationPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
super fast SSD for it's time. after 4 years it ... [Go to full review]
May 22, 2018
100%
TRUST
TRUST
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Verified Purchaser
-
Take-Back Reviewer (5 deleted Reviews; avg. rating: 4.2) -
Critical Reviewer (avg. rating: 4.2)
show)
Least Trusted Reviews
We couldn't find any low-quality reviews
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
701 of the 1,668 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 21 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
5.0 average rating of deleted reviews
Warn Rating Trend
Rating Trend
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- 21%
- Created over 45 days
We counted 1,668 reviews for this product over the span of 2,029 days, an average of 0.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 45 days exceeding this threshold:In total, we found that 349 reviews were created on just 45 days. This is an excessively high number of reviews submitted on these high volume days.
Pass Unverified Purchases
Unverified Purchases
78 of the 1,668 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
Word Count Comparison
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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
38 reviews
(4.6/5)
(4.6/5)
29 reviews
(4.7/5)
(4.7/5)
27 reviews
(5.0/5)
(5.0/5)
20 reviews
(4.5/5)
(4.5/5)
15 reviews
(4.9/5)
(4.9/5)
21 reviews
(4.5/5)
(4.5/5)
Common Phrases in Titles:
67 reviews
(5.0/5)
(5.0/5)
39 of the 1,668 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
5% also reviewed:
Silverstone Tek Ultra Thin Lateral 90 Degree SATA... by SilverStone Technology
2% also reviewed:
Crucial 4GB Single DDR3/DDR3L 1600 MT/s... by Crucial
2% also reviewed:
(Old Model) Seagate 5TB Desktop HDDSATA 6Gb/s NCQ... by Seagate
2% also reviewed:
Monoprice 18-Inch SATA III 6.0 Gbps Cable with... by Monoprice
2% also reviewed:
Inateck 2.5 Hard Drive Enclosure, USB 3.0... by Inateck
2% also reviewed:
SABRENT 2.5 Inch SATA to USB 3.0 Tool Free Clear... by SABRENT
263 of the 1,668 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Participation
Reviewer Participation
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- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.3, while the average ease score for reviewers in this category is 4.3.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
371 of the 1,668 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.